breakthrough hits with “Magic” and “Madonna”. Furthermore, with Wonder Girls recently vacating their long-held affair with retro in favor of a more fresh and futuristic(?) approach, Secret lays claim as the next best group to have established a retro identity." Catherine Deen of Yahoo! Philippines said that the group is known "for its unique ability to take retro music and make it their own." While reviewing "Love is Move", Park Hyunmin of enewsWorld commented that Secret is "known for its pop-heavy beats and easy-to-follow dance moves". Hyunmin further added that "Secret's main appeal is its retro beat and sexy choreography". Secret's output, particularly with their work with Kang Ji-won and Kim Ki-bum, makes use of live instruments such as brass, saxophones and drums with the incorporation of synthesizers and electric guitars. While reviewing "Poison", Seoulbeats commented that "the composition [of "Poison"] contains a very fitting saxophone hook along with recognizable brass and drum instrumentals that have become the trademark of Secret and their in-house composers, Kang Ji-won and Kim Ki-bum, who have produced all of Secret's retro hits. Secret's secret formula for success lies not only in their determined execution of one particular style, but their consistent development of a concept that suits them very well." Seoulbeats concludes that "Secret has carved out its conceptual niche in the K-pop market by developing a distinct and consistent style, and thus they are now in a position to elevate their success and recognition in the industry. While most other groups undergo drastic changes over time to keep current fans interested and to attract new fans, Secret clearly benefits from the advantages of continuity. What other groups or idols have carved out a stylistic niche over the years?" Image Secret is also known for their transitions to cute and the girl-next-door image through songs like "Shy Boy" and "Starlight Moonlight" from the sexy and powerful image through "Magic", "Madonna" and "Poison" while still retaining retro as the main theme for their sound. Although a commercial success with "Magic" and "Madonna" peaking at number two and number one respectively on the Gaon Charts, Secret failed to win a first place award on any televised South Korean weekly music shows such as M! Countdown, Music Bank and Inkigayo until "Shy Boy". Seoulbeats wrote, "Secret embarked on an aegyo phase in their following release of “Shy Boy" although with much voiced displeasure from the members. Despite